# 逻辑运算符
# if-else
# age = int(input("Enter your age: "))
# if age >= 18:
#     print("You are not a teenager.")
# elif age < 18:
#     print("You are a teenager.")

# 循环语句
i = 0
while i < 3:
    i = i + 1
    print(i)

# for循环
name = "zhangsan"
for i in name:
    print(i)
